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प्रश्न
Find the indicated term in the following sequence whose nth term is:
`a_n = n^2/2^n`; `a_7`
योग
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उत्तर
an = `"n"^2/2^"n"`
Substituting n = 7, we obtain
a7 = `7^2/2^7`
= `49/128`
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